CODEWITHSUNDEEP
c++templates
Avinash
Avinash

Reputation: 13257

passing member function pointer to a template function

I am trying to pass a Class member function pointer 

template < typename CLASS, typename TYPE1, typename TYPE2 > 
  void WriteFunctionHelper(CLASS* pOwner, PropInfoType::iterator& it, WriterPtr pw, WriterPtr (Writer::*func)(TYPE1, TYPE2) ) {
     MemberProperty<CLASS,TYPE2> *ptr = (MemberProperty<CLASS, TYPE2> *)it->second;
     const char *propertName = ptr->m_propertyName.c_str(); 
      if ( !ptr->m_getterFn ) { 
        throw; 
      } 
      pw->*func(propertName,(pOwner->*(ptr->m_getterFn))()); 
  }

I am getting compiler error error C2064: term does not evaluate to a function taking 2 arguments what is wrong that I am doing

Upvotes: 1

Views: 180

Answers (2)

SomeWittyUsername
SomeWittyUsername

Reputation: 18338

Your func pointer can be used to trigger a function expecting 2 parameters - first of TYPE1 and second of TYPE2. You're trying to send propertName to it, which is of type const char *. Second parameter also of different type as it's actually a type returned from (pOwner->*(ptr->m_getterFn))() and not TYPE2.

Edit: plus see answer from @DenisErmolin

Upvotes: 1

Denis Ermolin
Denis Ermolin

Reputation: 5546

Add bracers around pw->*func

(pw->*func)(propertName,(pOwner->*(ptr->m_getterFn))());

Upvotes: 3

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